Leftover (null) domUs

[Marcin Cieslak]

On Thu, 26 May 2016, Roger Pau Monné wrote:

> On Mon, May 23, 2016 at 07:38:42PM +0000, Marcin Cieslak wrote:
> > Hello,
> > 
> > sometimes (rarely) zombie domains are left over after "xl destroy":
> > 
> > # xl list
> > Name                                        ID   Mem VCPUs  State   Time(s)
> > Domain-0                                     0  3270     1     r-----   28887.1
> > (null)                                       7     0     1     --ps-d     769.7
> > (null)                                      34     0     2     --p--d       5.3
> > 
> > both are HVMs runing on r299012, (#7 was HVM FreeBSD guest, #34 Windows 2016 Server).
> > 
> > Recent "xl dmesg entries":
> > 
> > (XEN) mm.c:2010:d0v0 Error pfn 12b0a5: rd=ffff8304122e4000, od=0000000000000000, caf=180000000000000, taf=0000000000000001
> > (XEN) mm.c:2010:d0v0 Error pfn 12b0a4: rd=ffff8304122e4000, od=0000000000000000, caf=180000000000000, taf=0000000000000001
> > (XEN) mm.c:2010:d0v0 Error pfn 12b0a3: rd=ffff8304122e4000, od=0000000000000000, caf=180000000000000, taf=0000000000000001
> > (XEN) mm.c:2010:d0v0 Error pfn 12b0a2: rd=ffff8304122e4000, od=0000000000000000, caf=180000000000000, taf=0000000000000001
> 
> Right, can you paste the output of the 'g' debug key when you have only 
> domains in such state?

Thanks, didn't know that one. Will try the next time it happens, fortunately
not very often.

Marcin